Automobile heater



Sept. 14, 1937.

I A. G. REDMOND AUTOMOBILE HEATER Filed Jan. 2.6, 1935 2 Sheets-Sheet l M M M a m R W Q m 4 H i. 5 m W Sept. 14, 1937. v A. s. REDMOND. 2,093,057

AUTOIOBILE HEATER I F 'i1 ed Jan. 26, 1935 2 sheets-sheet? (law s Patented Sept. 14, 1937' UNITED s'rArEs PATENT OFFICE 2 Claims.

This invention relates to certain new and useful improvements in automobile heaters and more particularly to that type of I heater wherein a radiator is disposed within the body of an automobile in communication with the water cooling system of the engine, the object being to provide novel means for supporting the radiator heater unit in close proximity to the dash in orderlto allow the same to be placed in position in various makes of automobiles without being in the way of the occupants of the vehicle.

Another object of my invention is to provide novel means for mounting the motor and fan for causing air to circulate through the core of the radiator whereby the motor and fan are constructed as a unit and can be readily attached or detached from the radiator heater unit without detaching the radiator heater from the car.

Another object of my invention is to provide a novel form of fan and motor whereby the fan and motor can be supported by a spider outside the casing of the radiator heater unit and yet will occupy a very small space as the blades of the fan extend rearwardly over the motor casing and are provided with a front edge which is vertical so as to allow these blades to rotate without any danger of coming into contact with any other part of the heater when the device is in operation and the motor is traveling over rough roads.

A still further object of the invention is to provide 'a resilient mounting for the electric motor which has suiiicient rigidity to prevent the, same from distorting in use and yet will support the motor in a resilient manner so as to relieve the shock to provide a construction which allows the motor to be readily assembled or disassembled.

A still further object of the invention is to provide an air circulating motor and fan which is exceedingly simple and cheap in construction, the blades of the fan being formed integral with a central cup shaped member which is adapted to be secured to the end of the armature shaft of the electric motor in such a manner that the only material which extends beyond the end of the shaft is the thickness of the cup and the screw for securing the cup in position on the end of the armature.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawings,

Figure 1 is adiagrammatic view illustrating the application of my improved construction of automobile heater;

Figure 2 is a vertical section, partly in elevation, showing the manner of securing the radiator heatingunit to the dash and the air circulating fan and motor in position to the radiator heater unit;

Figure 3 is a detail enlarged section, taken on 1 line 3-3 of Figure 4, showing the contour of the edge of the blades so as to conform to the shape of the motor housing;

Figure 4 is an elevation of the spider with the fan and motor in position therein detached;

Figure 5 is an elevation of the motor and fan detached from itsmounting;

Figure 6 is a detail section showing the resillent support for the motor; and

Figure 7 is a detail elevation of the same.

In the drawings i indicates an internal combustion engine which is provided with the usual radiator 2 through which air is adapted to be circulated in the usual manner for cooling the engine. 3 indicates the dash of the motor vehicle which is herein shown provided with open ings through which are adapted to extend water conduits d and 5 of a radiator heater unit d, said water conduits being connected respectively to the engine and radiator i and 2 by pipes i and t. The water conduits 41 and 5 extend through suitable nipples t mounted in the dash board 3 and secured thereto by nuts it. The nipples are provided with an inner recess 5 i in which. is arranged a reent heat insulating packing sleeve i2 preferably made of rubber or any other suitable composition, which is adapted to support the tube free from the inner surface of the nipple so as to be in spaced relation thereto, which protects the tube from wear and vibration and eliminates the convection of heat therefrom.

The particular construction of radiator heater" unit and manner of mounting the same, in the dash board forms-no part of my invention as the heater unit can be supported by the water conduits t and b alone or other suitable supporting brackets can be employed such as disclosed in the patent to Noblitt, et al., No. 1,872,794, dated August 23, 1932, and therefore I do not wish to limit I myself to the use of any particular construction of heating unit or any other particular construction of mounting the same.

The radiator heater unit "6 comprises a core is with upper and lower headers i4 communicating therewith in which are secured thewater conduits t and 5 and through which the hot water from the cooling system of the engine is adapted to circulate in the ordinary manner.

The radiator heating unitis provided with a casingherein shown formed of two telescoping sections it and ii, the section It being provided with suitable shutter deflectors I! for controlling the discharge of heated air. The section I! is mounted on the conduits 4 and 5 by any suitable means as shown in Figure 2 and is provided with a central opening I 5' through which air is adapted to be forced so as to cause air to circulate through the core of the radiator heater in order to heat the same.

Secured over ,the opening ii of the of the casing is a. spider l8 provided with a central opening IS in which is disposed one end of an electric motor 20 provided with an armature shaft 2| carrying a fan composed of a central cup shaped portion 22 having blades 23 radiating therefrom which are bent to conform to the shape of the motor housing along one edge as shown at 23' and the other edges of the blades are arranged so as to be parallel with the vertical opening formed in the radiator heat unit.

The fan is stamped of a single piece of metal and by forming a central cup portion it has suflicient strength and by providing blades of the construction shown, the forward edges are perpendicular to the motor which allows the same to be put close to the core of a radiator.

. The armature shaft 2| is provided with a threaded bore 2| into which extends a screw 24 for fastening the blades of the fan to the armature shaft as clearly shown in Figure 3, which provides a construction of fan and motor in which the fan blades extend rearwardly over the motor housing whereby they occupy only the space in advance of the armature shaft the distance of the thickness of the material constituting the cup of the blades and the head of the screw 24 whereby I am able to form a combined motor and fan with a plurality of blades, the forward edges of which are perpendicular to a line drawn vertically parallel with the rear of the radiator heater unit housing. The screw 24 is preferably welded to the cup portion of the fan which enables the fan to be attached and detached readily from the armature shaft.

The motor housing is provided with apertured lugs 25, the openings of which are adapted to register with the openings 26 formed in the spider i8, said openings being provided with beveled faces 28' into which are adapted'to be forced rubber washers 21 by metal washers 28 which are concavo-convexed in shape and are carried by screw bolts 29 which pass through the openings 26 and through the openings of the lugs 25 and are secured by nuts 29', suitable rubber washers 30 being disposed between the lugs 25 and the spider l8 as clearly shown in Figures 6 and 7 whereby a resilient mounting for the electric motor is provided which has sumcient rigidity to prevent the motor from distorting in operation.

It will be apparent that by constructing the electric motor with a housing having lugs and securing the lugs to the spider by bolts as clearly shown and described that a resilient mounting for the motor is provided which allows the motor to be readily attached or detached from the spider and that by providing a spider to carry the motor, that the motor and spider can be connected together and attached or detached from the radiator heater unit as a single unit, the fan and motor being enclosed within thespider so as to protect the same for shipping and to protect the same when in use.

In the operation of a heater constructed in acsection I s cordance with my. invention, it is assumed that electrical energy is supplied to the motor so as to cause the armature to rotate and as the armacirculation of hot air through the body of the vehicle to which the heater is attached.

With my construction of motor and fan and manner of mounting-the, same, I am able to mount the radiator heater unit in close proximity to the dash as with the construction of fan and motor as herein shown and described, the blades of the fan extend over the motor and thereby the distance now occupied with other types of fans is saved and a very novel construction is provided which enables the heating unit and fan unit to be independently mounted in such a manner that the fan unit can be easily and quickly attached or detached from the radiator heating unit without detaching the heating unit from the motor vehicle. I

It will also be seen that I have provided very novel resilient means for mounting the electric motor and fan within the spider in order to provide resilient means for supporting the motor and a cushioning element which will not distort and cause the fan to hit the heater core or motor casing when mounted on the dash of various styles of motor vehicles and while I have shown and described resilient means formed of rubber, I am aware that other resilient means could be usedwithout departing from the spirit of my invention.

From the foregoing description it will be seen that I have provided an automobile heater comprising a radiator heating unit which can be disposed in close proximity to the dash by the use of a motor and fan support comprising a spider which is detachable to the heating unit and carries an electric motor resiliently supported therein having a fan carried by the armature shaft .thereof, the forward edges of the blades of which are perpendicular in order to allow the fan to be arranged in close proximity to the core of the heater, the rear edges of the blades of the fan extending rearwardly over the housing of the motor which enables a construction of radiator heater to be provided which will occupy a very small space within the body of the motor vehicle.

This construction also allows the motor and fan to be attached and detached to the heating unit when the same is in position within a motor vehicle without detaching the heating unit from the vehicle whereby the fan can be detached for repairing the same and by mounting the same. on resilient supporting members the fan will be relieved from shock and will be held in proper position under all conditions.

I am able'to accomplish the above results by the use of the particular construction of fan and motor as the blades of the fan are so constructed that they extend rearwardly over the housing of the motor and the only portion that extends in advance of the end of the armature shaft of the motor is the thickness of the central cup shaped hub portion of the fan and the screw for securing the same in'position therein.

While I have shown certain details of construction, I wish it to be clearly understood that I do not wish to limit myself to these details as 'my invention consists broadly in the particular construction of motor and fan and the application of the same to an automobile heater which overcomes the 'difliculties now existing in this type of heater employing a radiator heating unit through which hot water or a heating medium is adapted to circulate when it is disposed within the body and supported on the dash of a vehicle.

What I claim is: I

l. A support-for entirely enclosinga fan and motor of the kind described comprising a spider for entirely enclosing a fan and motor having a central opening to receive one end of a motor, an annular flange at the forward end of said spider for attaching it to a support, the housing of said motor being provided with radially extending apertured lugs, said spider being provided with openings around the opening thereof in alignment with said lugs having beveled faces, bolts passing through the openings of said apertured lugs and the openings of said spider, resilient washers disposed between said spider and said apertured lugs, resilient washers carried by said bolts and seated on the inclined faces 01' said openings of said spider and concavo-convexed washers carrled'by said bolts engaging the flexible washers for forcing said washers within the openings of said spider for resiliently supporting said motor therein.

2. A resilient support for an electric motor and fan comprising a spider for entirely enclosing said motor and fan having a central opening, said spider having a plurality of openings provided with beveled faces arranged around said central opening, said motor being provided with apertured lugs arranged in alignment with the opening of said spider,.bolts extending through said opening of said spider and lugs and rubber washers carried by said bolts to each side of said spider for resiliently supporting said motor entirely within said spider.

ALBERT G. REDMOND. go 

